This is a free lesson from our course in Geometry In this lesson, we will look at the formula used to calculate the area of a rectangle. You will learn it with the help of some examples and practice questions with solution, using video explanations by the instructor. A rectangle is a four sided polygon, where opposite sides are parallel and congruent. The area of a rectangle can be obtained by multiplying the lengths of the two sides. If length of one side is l and the length of the other side is w, then the area of the rectangle is given by the formula: Area = l x w. For example, the area of a rectangular room of dimensions 10m and 20 m is 200 m2. (More text below video...)
Other useful lessons:
 Area of a Square Area of a Triangle - Areas of Polygons and Circles Area of a Rhombus Area of a Parallelogram Area of a Trapezoid Area of a Circle Effect of dimension changes on Area Real World Applications - Area of Polygons and Circles
(Continued from above) The formula for finding the area of a rectangle can also be used to find the length of one side, if we know the area and the dimension of the other side.
length = Area/width.
width  = Area/length.
For example: if the area of the rectangle is 120 cm2 and the length is 12 cm, then width works out to 120/12 = 10 cm.
Winpossible's online math courses and tutorials have gained rapidly popularity since their launch in 2008. Over 100,000 students have benefited from Winpossible's courses... these courses in conjunction with free unlimited homework help serve as a very effective math-tutor for our students.
 - All of the Winpossible math tutorials have been designed by top-notch instructors and offer a comprehensive and rigorous math review of that topic. - We guarantee that any student who studies with Winpossible, will get a firm grasp of the associated problem-solving techniques. Each course has our instructors providing step-by-step solutions to a wide variety of problems, completely demystifying the problem-solving process! - Winpossible courses have been used by students for help with homework and by homeschoolers. - Several teachers use Winpossible courses at schools as a supplement for in-class instruction. They also use our course structure to develop course worksheets.

 Copyright © Winpossible, 2010 - 2011 Best viewed in 1024x768 & IE 5.0 or later version